package jdbc;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

public class LoginUserDemo {
    public static void main(String[] args) {
        try ( Connection connection = DBUtil.getConnection()){
            Scanner sc = new Scanner(System.in);
            System.out.println("登录界面启动");
            System.out.println("请输入用户名：");
            String username = sc.next();
            System.out.println("请输入密码：");
            String password = sc.next();
            Statement statement = connection.createStatement();
            String sql = "SELECT username,password "+
                    "FROM userinfo "+
                    "WHERE username='"+username+"' AND password='"+password+"'";
            ResultSet rs = statement.executeQuery(sql);
            if (rs.next()) {
                System.out.println("登录成功！");
            } else {
                System.out.println("用户名或密码错误！");
            }

        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}
